How does the one-time identification for a qualified digital signature work?

If you have purchased a premium package from sproof sign or have been given the option of qualified signing by the administrator of a package, an invitation for identification will appear in your dashboard after you have logged in to sproof sign. For the identification you need your photo ID, a mobile phone and a PC with webcam and about 5 minutes for a video call. You will then be guided through the process by an agent where you register your mobile phone as a second factor and identify yourself with your photo ID.